Improvement in pneumatic elevators and conveyers



EQJ. HATCH.

WITNESSES y mvemgn ATTORNEYS ETERS, FHOTO'LIYHOGRAPKER, WASHINGTON. D, C

UNITED EDWIN J. HATCH, OF MORRISVILLE, NEW YORK.

IMPROVEMENT IN PNEUMATIC ELEVATORS AND CONVEYERS.

Specificationforming part of Letters Patent No. 222,900,

August 2, 1879.

To all whom it may concern:

Be it known that 1, Enwnv J. HATCH, of .Morrisville, in the county of Madison and State of New York, have invented certain new and useful Improvements in Pneumatic ,Elevators and Conveyors; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawingsis arepresentation of a longitudinal central section of my device, and Fig. 2 is a side-elevation view of the same.

This invention relates to an improved pneumatic elevator or conductor for grain; and it consists in the construction and combination of certain parts, as will be hereinafter more fully described and claimed.

In the annexed drawings, A designates the head of the elevator; B, a passage for the upward current of air and grain; c, an inlet for the admission of the grain into passage 13, and d an opening for the admission of air into the same passage.

E is a-partition which separates passage B from the exhaust passage or flue F, and G is what I designate as a recci ving-chamber for the grain, the same being within the head A,

just below the upper terminus, c, of the curved portion of partition E.

The box or drum f communicates with passage F, communication being established between the two through the medium of openings 'i 5. The box or drum f contains the exhaust-fans l, which are adapted to exhaust air from flue F, and these fans are mounted upon a shaft which is rotated in the usual way.

M is a valve at the lower portion of chamber G, and N a valve adapted to close an airport formed in fine F. The drum fis provided with a suitable opening or openings,

through which air and dust are expelled.

The operation is as follows: During the rotation of the fans the upwardly-induced current of air and grain within flueB passes into chamber G, where the grain is deposited. It will be seen that the area of flue F is, for a short distance above chamber G, considerably dated December '23, 1879; application filed greater than the area of flue B and the lower portion of chamber G, and hence the dust and air will pass into flue F,

and thence into the drum f through openings '5, as indicated by the arrows in the drawings.

It will be observed that as the air passes into the enlarged upper end of flue locity will be diminished its veby reason of such enlargement, and hence the grain and dust will pass into flue F, while the grain will fall into the chamber G and upon the outwardlyopening valve M.

This valve will remain closed, by reason of its own gravity, while the machine is at rest, while as soon as the fans or exhaust is started closed by the exterior side.

It will also remain it will be more firmly atmospheric pressure upon its thus until the pressure of the grain or other substance is sufficient to overcome the exterior pressure, when it will open and discharge the elevated grain as rapidly as it falls from flue B.

the tube or After all of the material has been elevated a quantity will remain in the chamber G until the exhaust is stopped. To obviate this, open valve N, which will admit air into flue F, thereby relieving valve M of the outer press ure,

or rather admit of equal atmospheric pressure upon both of its sides, and hence admit of all of the grain dropping out.

It is obvious that the positions of the flues B F may be varied and set at any angle without departing ven tion.

from the spirit of my in- In some instances where a conveyer is to be used the head A may be located at the point where the material is to be conveyed,

tube F connected with the head and with an exhaust, and tube B also connected with the head and carried to the place from where the grain or material is to be conveyed, all .of the parts being, however, adapted to operate upon the same principle, as above set forth.

What I claim, and desire to secure by Letters Patent, is-

1. In a pneumatic elevator and conveyer, the conveying-tube B, chamber G, valve M,

air-tube F, and exhaust Z, all arranged substanti. lly as herein shown and described.

2. The communicating tubes or flues intermediate chamber, G, and valve M, the area of the tube F being enlarged for a short distance above chamber G, whereby the velocity of the current of air is diminished as it enters said enlarged portion of the tube, substantially as set forth.

3. In combination with the tubes B and F and an exhaust, the valves M and N, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two Witnesses.

EDWIN J. HATCH.

Witnesses:

OTIS S'roRR, CHAS. M. SEYMOUR. 

